Gimp is normally used to create or manipulate images files, but can also work with PDFs if you understand how it works and what it's limits are. If you’ve never used Gimp—a free image editor ...

double-clicking the .ps file will open the file in Adobe Distiller that will automatically flatten the file and convert it to a PDF file with only one layer visible. If you are using the Pro ...

This option keeps the layers as layers instead of flattening the image artwork and placing it on a single page. To open the PDF file in GIMP with the separate layers, find the PDF file and right ...

optimizing that PDF, and then opening it up in Illustrator, does in fact create layers similar to what is seen in the birth certificate PDF. You can try it yourself at home. UPDATE II: For those ...

Ubuntu's Gnome-based graphical user interface lets you open and view business documents saved in the PDF format using the Nautilus file manager and a few mouse clicks. Since Ubuntu is a Linux ...

Google Chrome for Android will soon finally open PDF files on its own without the need for a third-party app. You can search through PDFs or annotate them before saving them to Google Drive.